Unitary duct



FIG. 1 is a perspective view of my new design for the unitary duct;

FIG. 2 is a front view of my new design for the unitary duct;

FIG. 3 is a back view of my new design for the unitary duct;

FIG. 4 is a side back view of my new design for the unitary duct;

FIG. 5 is a top view of my new design for the unitary duct;

FIG. 6 is a bottom view of my new design for the unitary duct; and,

FIG. 7 is a top view in an environment of use view of my new design for the unitary duct. 

CLAIM An ornamental design for a unitary duct, as shown and described. 